Oil and water well strainer.



PATENTED MAP. 3, 1908.

H. R. DECKER. 01L AND WATER WELL STRAINER.

- APPLICATION FILED NOV. 17,1905.

JHARRY'R. DECKER, oFHousroN, TEXAS.

- OIL AND wernittwnnr. STRAINER. I

I Specification of'Letters Patent. Application filed November 17. lanai-semi No. 287.885.

ratented'lfiarch 3, 190 8.

To all whom it mag concern: Be it known that I, HARRY R. D

Houston, in the county ofiHarris and State of Texas, have invented certain new and useful Improvements in Oil and Water Well Strainers, fication.

My invention relates to strainers for use in oil and water wells to separate the fluid from the sand that usually contains it. I I -My. invention is' an improvement on strainers of the wire-wound class and consists in' the wrapping of a perforated pipe with 'awire having projections extending from the inside, and below the narrow edge of the wire. This wire is wrapped around the pipe with theprojections resting upon the pipe, the bodyof the wire being above and free from contact withjthe pipe, the circulating space between and underneath the Wire only being restricted in any manner whatever where the projections referred to come in contact with the pi e. These pro- 5"jections can be so made by outward from the wire as well as downward -that a base is formed for the wire of greater {width than its upper and exposed edge The wire so made aifords three distinct advanta es: First,..tl1e wire is braced and securely he d in position against its next winding and can not shift and change the spacing between the wires. Second, the width of the'base determines the space of the slits between the 5 wires, making the operationof spacing, when winding the wire on the pipe, exact and "accurate. Third, the wire being above and freev from contact with the pipeexcept' where theprojections occura maximum 40 of freedom is allowed the fluid after entrance into the strainer through the slits between the wires, to flow. 1'1ninterruptedly in any "direction until it reaches the nearest perforation in the pipe. Another-advantage in' my improved wire is that by making the sides of these projections triangular in shape, and the apex'just. below the top of the wire the inlet space of the slits is entlrely unrestricted, and bracing, spacing. and free fiow.for the fluid to in every direction is provided without in any way reducing the e surface. 'By reason of my improved construction in p elevating the wire above the pipe and allowit to rest on projections, it is possible:

ective area of strainer andis' contemplated in my improvement-- m citizen of the United States, residing at of which the following is a speci-' eing extended to make this wire with straight sides, using a flat wire rectangular in cross-section as shown in the drawings, and still have a much eater circulating space than isrovided, with the resent type of wires which hug the pipe. y this method ofxconstruction a great advantage would be derived -in providing a 7 thickness of wire at the point where the fluid enters the strainer and which under certain conditions is subjected to considerable wear and tear. Such wear and tear when oilis found in a stratum containing gas under heavy pressure is serious and verydestructive" to the present type of strainers, and frequently wears away and cuts the edge of space between the windings; andmaking the strainer ineffective because of unequalwidth of slits and sand bein admitted throughsame. -My invention w' be'describedin detail hereinafter and illustrated in the accompanying drawings in which Figure 1 is a view of fragment of a strainer tube partly insection showing my improved ,windin wire 1n position, Fig. 2 aside view of one orm of wire that may be usedwith my Fig. 3, a cross-sectional view of the wire shown in Fig. 2, Fig. 4, a

improved strainer.

side view of another formbfwire that may be the wires forming .the slits, enlarging the used, and Fig. 5, a cross-sectional view of the wire show:n'in Fig. 4. In the drawingssumlar reference characters indicate corresponding parts throughout the several views. v

,1 represents the strainer pipe or tube having its lower end closed and} rovided with holes 2 adjacent thereto. The tube '1 is wrapped with a 'wire 3. My invention consists in the improvement of the construction ofthis wire of which two forms are. shown in the drawings. In Figs. 2 and 3 a wire is shown that is triangular in cross-section,-

while in Figs. 4 and -5 the-wire is flat.

In-Figs. 2 and 3 the wire is designated by the reference character .4. 5 representsfiat projections on one side of the wire that are flush with one edge of its outer surfacefi, while 7 represents triangular the other side of the wire that have their outer surface beyond the plane of the other projections on edge of the outer surface 6. The apex- 8 of the triangular low thelevel o the surface 6 so that when the wire is in position the projections 5 and 7 engaging one another space the coils of the rojection 7 is, however, be-' wire. apart so as to admitthe oil or waterthere- Y between but to exclude the sand containing said liquid. When in position the apex 8 of the trian ular projection 7 does not extend into the 5s between the coils of the wire so 5 that the entrance of the oil or water is not impeded in the least, while the triangular projections form an effective brace to prevent the coils of wire upsetting should obstructions be encountered in the well tube. The projections 5 and 7 extend below the inner edge 9 of the wire 4 to form legs as shown at 10 to hold the edge of the wire away from the pipe 1 so that the fiuid'entering between the coils of the wire may flow directly to one of the holes 2 in the pipe.

As shown in the drawings the legs 10 are formed on each side of the wire and are arranged in pairs spaced" apart 'so that the liquidfiowing between the coils may freely flow therebetween, this structure providing a substantially unobstructed chamber between the tube 1 and the winding wire 'so that the liquid may pass without obstruction to the nearest hole 2 in the tube.

i In the form shown in Figs. 4 and 5 the Wire instead of being of triangular shape is flat and indicated by the character 1 1 with projections .12 extending from its inner surface having one sidefiush with the edge of the wire i while the other side of the projections project beyond the other edge of the Wire and is in the shape of a triangle as shown at 13 having its apex 14 below the-outer surface of the wire. Thebases of the'projections 12 are cut out as shown at 15 so that the fluid that may fiow through the spaces between the coils of the Wire when in position may flow to the holes 2 without being impeded.

Having thus described my invention what 1. In a strainer, a perforated pipe, wire wrapped-thereon, and means integral with said wire to space it from the pipe and form .a chamber between'the wire. and pipe, sub-,

' stantially'as shown and described.

2. In a strainer, a pi ehaving holes therein, and wire wrappe thereon having legs to s ace the wire from thepi e and form a cham e'r between the wire an pipe, substantially as shown and described.

3. In a strainer, a pipe having holes therein, and wire wrapped thereon having; projections extending from one of its sides, said I projections extending jections extending elow its base, to form 9.

shown and descrixed.

projections being extended beyond the inner edge of the wire to form legs to space the Wire from said pipe, substantially as shown and described. 4. In a strainer, a pipe having holes there in,'and wire wrap ed thereon having projections extending below its base, one of the edges of said projections being triangular in shape and extending beyond the plane of the corresponding edge of the wire, substantially as shown and described.

5. In a strainer, a pipe having holes therein, and wire wrapped thereon having projections extending below its base, one of the edges of said projections bein triangular in shape and extending beyond t e plane of the corresponding edge of the wire, the apex of the triangular projection bein below the surface of. the wire,,substantia y as shown and described.

6. In a strainer, in, and wire wraplp cross-section and ingbelow its base, substantially as shown and described. j

'Z. In a strainer, a i e having holes-there-v in, and wire wrapped t 'ereon rectangular in aving'zprojections extendcross-section an 111g beyondlts sldes, sa pro ections being a ipe having holes therc-' ed thereon rectangular in extended beyond the inner edge. of the wire' to'formle s to spacethewirefrom said pipe, substantia yas shown anddescribed.

in, and; fiat wirewra 'pedthereon'having elow its base, one o the edges of said projections 'bein triangular in shape and extending beyond the plane of .the 'corres ending ed e of the Wire, substantially as s own and ascribed. 4 9. 'In a strainer, a pipe having holes there in, and wire wrap ed thereon having pro} chamber between the wire and pipe, and projections on one side of the wire jextended eyond its plane to space the adj a'cent coils of wire from one another, substantially as hereof I hereto affix my esence of two witnesses. ARRY It.'DEGKERv Witnesses:

J. R. Moa'sn,

WM. CLARK.

In testimony signature in the aving projections extend- 8. In a strainer,apipe having holes-there- 

